Finding a Road Runner skull in the desert made me chuckle and ponder about this efficient predator that holds a link to the Sonoran desert ecology and all the chuckwalla lizards that it's preyed upon! The design around the top is a road runner beak right side up and upside down the design around the bottom is the ball socket of a desert tortoise. Held inside the vessel are all those desert secrets that balance the fragile ecology of the Sonoran Serenade.